enforce wait/nowait arg on out

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8009 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/applications/mod_fifo/mod_fifo.c

@@ -233,7 +233,12 @@ SWITCH_STANDARD_APP(fifo_function)
     announce = switch_channel_get_variable(channel, "fifo_announce");
 
     if (argc > 2) {
-        nowait = !strcasecmp(argv[2], "nowait");
+        if (!strcasecmp(argv[2], "nowait")) {
+			nowait++;
+		} else if (strcasecmp(argv[2], "wait")) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "USAGE %s\n", FIFO_USAGE);
+			return;
+		}
     }
 
     if (!strcasecmp(argv[1], "in")) {